package com.bff.gaia.streaming.api.xjoin.operators;/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import com.bff.gaia.api.java.typeutils.RowTypeInfo;
import com.bff.gaia.streaming.api.datastream.DataStream;
import com.bff.gaia.streaming.api.datastream.SingleOutputStreamOperator;
import com.bff.gaia.streaming.api.xjoin.client.hbase.all.HbaseAllReqRow;
import com.bff.gaia.streaming.api.xjoin.client.mysql.all.MysqlAllReqRow;
import com.bff.gaia.streaming.api.xjoin.core.side.AllReqRow;
import com.bff.gaia.streaming.api.xjoin.core.side.FieldInfo;
import com.bff.gaia.streaming.api.xjoin.core.side.JoinInfo;
import com.bff.gaia.streaming.api.xjoin.core.side.SideTableInfo;

import java.net.URLClassLoader;
import java.util.List;

/**
 * Project Name: gaia-parent
 * Description:
 * Data: 2019/7/23 11:25
 * Company: NEU
 *
 * @author tiger
 * @version v1.0
 */
public class XjoinAllOperator {
	private static AllReqRow loadFlatMap(String sideType, RowTypeInfo rowTypeInfo,
	                                     JoinInfo joinInfo, List<FieldInfo> outFieldInfoList,
	                                     SideTableInfo sideTableInfo) throws Exception {

		switch (sideType) {
			case "mysql": {
				return new MysqlAllReqRow(rowTypeInfo, joinInfo, outFieldInfoList, sideTableInfo);
			}
			case "hbase": {
				return new HbaseAllReqRow(rowTypeInfo, joinInfo, outFieldInfoList, sideTableInfo);
			}
			default: {
				return null;
			}
		}


	}

	public static SingleOutputStreamOperator getSideJoinDataStream(DataStream inputStream, String sideType, RowTypeInfo rowTypeInfo, JoinInfo joinInfo,
	                                                                  List<FieldInfo> outFieldInfoList, SideTableInfo sideTableInfo) throws Exception {
		AllReqRow allReqRow = loadFlatMap(sideType, rowTypeInfo, joinInfo, outFieldInfoList, sideTableInfo);
		return inputStream
			.flatMap(allReqRow)
			.setParallelism(sideTableInfo.getParallelism());
	}
}